Judgment of the Court (Sixth Chamber) of 14 September 2000 in Case C-343/98 (reference for a preliminary ruling from the Pretore di Pinerolo): Renato Collino, Luisella Chiappero v Telecom Italia SpA (Directive 77/187/EEC — Safeguarding employees' rights in the event of transfers of undertakings — Transfer of an entity managed by a public body forming part of the State administration to a private company whose capital is publicly owned — Definition of an employee — Taking into account of employees' total length of service by the transferee)